Rewarding!
You and your two friends enter a drawing with 15 other people to win concert tickets. They are giving away three tickets.
1.) What is the probability that you and both your friends win the three tickets?
2.) Whats the probability that you win a ticket but your friends don't?
3.) Whats the probability that neither you nor your friends will win the tickets?

Question

anonymous · Answer

There are 18 people entering, and three tickets. If there was 1 ticket, each person would have a 5.5 percent chance of getting a ticket. 3 tickets increases that chance to 16.5 percent (per person). 
now, I'm not sure how to calculate #1, because I am not sure what to do when dealing with more than one person, but I can help with #2 and #3;
#2; 16.5 percent (1/18 x 100=16.5)
#3; 83.5 percent (100-16.5= 83.5)